Under normal circumstances, dogs can be vaccinated after 45 days. Dogs need to be vaccinated against canine infectious diseases for the first time, and three shots are required. Currently, there are four-part vaccine, six-part vaccine, etc. on the market. You can choose the appropriate vaccine for your dog according to the actual situation. The interval between each injection is 21 days. After the last injection, you can inject the rabies vaccine one week later, and you are done. The first immunization procedure is followed by a booster immunization once a year. It should be noted that vaccination must be given when the dog is completely healthy, so as to better protect the dog's body and ensure the production of antibodies.

Precautions for dog vaccination:

1. Do not change dog food, take medicine, change the environment, etc. immediately after vaccination to avoid stress reactions.

2. Try to avoid going out after vaccination to prevent infection by external bacteria and viruses. During this period, owners should take more careful care of their dogs.

3. The dog should stay in the hospital for observation for 30 minutes after the injection. If the dog shows symptoms of edema, rash, or difficulty breathing, the doctor should be notified in time to receive an anti-allergic injection.